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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A342607 a(n) = Sum_{d|n} phi(d)^(n-d).

Table of values

n a(n)
1 1
2 2
3 2
4 3
5 2
6 11
7 2
8 19
9 66
10 1027
11 2
12 835
13 2
14 279939
15 1052674
16 69635
17 2
18 10114563
19 2
20 1074855939
21 78364426242
22 100000000003
23 2
24 4315152387
25 1099511627778
26 106993205379075
27 101559973445634
28 21937029021319171
29 2
30 1162183941554179
31 2
32 562950221856771
33 10000000000001073741826

List of values

[1, 2, 2, 3, 2, 11, 2, 19, 66, 1027, 2, 835, 2, 279939, 1052674, 69635, 2, 10114563, 2, 1074855939, 78364426242, 100000000003, 2, 4315152387, 1099511627778, 106993205379075, 101559973445634, 21937029021319171, 2, 1162183941554179, 2, 562950221856771, 10000000000001073741826]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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